DK153311B - TENSION CORD FOR PNEUMATIC COVER - Google Patents
TENSION CORD FOR PNEUMATIC COVER Download PDFInfo
- Publication number
- DK153311B DK153311B DK326182A DK326182A DK153311B DK 153311 B DK153311 B DK 153311B DK 326182 A DK326182 A DK 326182A DK 326182 A DK326182 A DK 326182A DK 153311 B DK153311 B DK 153311B
- Authority
- DK
- Denmark
- Prior art keywords
- bead
- filaments
- choir
- pitch
- core
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/04—Bead cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/48—Bead-rings or bead-cores; Treatment thereof prior to building the tyre
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/48—Tyre cords
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
- B29L2030/001—Beads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/04—Bead cores
- B60C2015/044—Bead cores characterised by a wrapping layer
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2046—Tire cords
- D07B2501/2053—Tire cords for wheel rim attachment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S57/00—Textiles: spinning, twisting, and twining
- Y10S57/902—Reinforcing or tire cords
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10495—Pneumatic tire or inner tube
- Y10T152/10819—Characterized by the structure of the bead portion of the tire
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Tires In General (AREA)
- Ropes Or Cables (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Communication Cables (AREA)
- Conductive Materials (AREA)
Description
DK 153311 BDK 153311 B
JLJL
Opfindelsen angår en vulstsnor til pneumatisk dæk, hvilken vulstsnor består af en kore og et arrangement af tråde, der ligger an mod og omgiver koren.BACKGROUND OF THE INVENTION This invention relates to a pneumatic tire bead which comprises a bead and an arrangement of threads abutting and surrounding the bead.
Et dæk består i hovedsagen af en rundtgående top-5 part og to dæksider, der hver har sin vulst til placering på vulstsædet på hjulfælgen. Hver vulst har mindst én rundtgående vulstsnor, der er koncentrisk med dækkets rotationsakse. Vulstsnoren har som hovedfunktion at forankre dækkassearmeringen og stramme vulsten om hjulfæl-10 gen.A tire consists essentially of a circular top-5 part and two tire sides, each having its bead for placement on the bead seat of the wheel rim. Each bead has at least one circumferential bead cord concentric with the tire's axis of rotation. The main feature is to anchor the tire reinforcement and tighten the bead around the wheel rim.
I modsætning til dækkassearmeringen, der deformerer sig under kørslen, skal vulstsnoren, der holdes fast i forhold til fælgen, kunne tåle de kræfter, der fremkaldes af dækkassearmeringen, og den reaktion, der skyl-15 des stramningen om fælgen. Man stræber således efter vulstsnore, der både er lette og modstandsdygtige og navnlig har stor brudstyrke.Unlike the tire reinforcement which deforms during the ride, the bead strap held in relation to the rim must be able to withstand the forces induced by the tire reinforcement and the reaction due to the tension on the rim. Thus, strive is made for beaded cords that are both lightweight and resistant and in particular have high breaking strength.
Vulstsnorene fremstilles sædvanligvis af ståltråde. Man opnår tilfredsstillende brudstyrke, når man an-20 vender stål, men vulstsnorene af ståltråd er tunge.The beads are usually made of steel wire. Satisfactory breaking strength is achieved when using steel, but the steel wire beads are heavy.
De såkaldte bundtsnore fremstilles ved i en rundtgående not i en skive, at vikle et antal vindinger af ståltråd til opnåelse af en ring af parallelle vindinger. Sådanne vulstsnore finder især anvendelse i per-25 sonbildæk. De kan fremstilles med vidt forskellig tvær-snitsform. Med de nu anvendte syntetiske letvægts-tekstilf i lamenter , der efterhånden har fået større og større brudstyrke (f.eks. filamenter af rayon, polyestere, polyamider, herunder aromatiske polyamider, polyvinylal-30 kohol, glas, bor, carbon) har man forsøgt at gøre bundtsnorene lettere ved med den samme fremstillingsmetode som for bundtsnore af ståltråde, at vikle filamenter, der på forhånd er påført klæbe- eller bindemiddel.The so-called bottom cords are manufactured by winding in a circular groove in a disc a number of turns of steel wire to obtain a ring of parallel turns. Such beaded cords are particularly applicable in person tires. They can be made with widely different cross-sectional shapes. With the synthetic lightweight textiles now used in laminae that have gradually gained greater and greater breaking strength (eg filaments of rayon, polyesters, polyamides, including aromatic polyamides, polyvinyl alcohol, glass, boron, carbon), have been attempted. to facilitate the bottom cords by winding filaments pre-applied with adhesive or binder with the same manufacturing method as for steel wire cords.
Sådanne bundtsnore af tekstilfilamenter har dog 35 en ulempe, der gør dem uegnede til brug i pneumatiske dæk. Når dækket påmonteres fælgen, skal man med et dæk-However, such bottom strings of textile filaments have a disadvantage which makes them unsuitable for use in pneumatic tires. When the tire is mounted on the rim, you must use a tire-
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2 jern løfte dækvulsten op over fælgkanten, hvorved vulst-snoren lokalt udsættes for bøjning. Derved forekommer der en udbøjning af de filamenter, der befinder sig langs med og ved den radialt inderste side af vulstsno-5 ren, til trods for, at filamenterne er klæbet sammen. På det sted, hvor denne bøjning finder sted, har vulstsno-ren derfor ikke længere tilstrækkelig brudstyrke.2 iron lift the tire bead up over the rim edge, thereby exposing the bead cord locally to bending. Thereby, there is a deflection of the filaments located along and at the radially inner side of the bead cord, despite the filaments being glued together. Therefore, at the place where this bending takes place, the bead cord no longer has sufficient breaking strength.
Opfindelsen tager sigte på at afhjælpe denne væsentlige ulempe ved bundtsnore af sammenklæbede teks-10 tilfilamenter.The invention aims to alleviate this significant disadvantage of bundled strings of adhered text-10 filaments.
Med henblik herpå er en dækvulstsnor ifølge opfindelsen ejendommelig ved, at trådarrangementet indbefatter mindst ét lag bestående af mindst én dugt af kontinuerlige, ikke-metalliske, tilnærmelsesvis parallelle, 15 uimprægnerede filamenter, hvilken dugt er viklet om koren i én og samme retning op til en tykkelse i det mindste lig med det dobbelte af middeldiameteren af et filament og med en stigning (p) mindre end 2 V ac, hvor a er radien af den med korens omkredslængde i et tvær-20 snitsplan ækvivalente cirkel og c er middelværdien af korens omkredslængde, og med en snoning af dugten i samme retning som omviklingen og lig med dugtstigningen p, og at filamenterne fortrinsvis har et tværsnitsareal på højst 0,1 mm2.To this end, a cover wool cord according to the invention is characterized in that the wire arrangement comprises at least one layer consisting of at least one sheet of continuous, non-metallic, approximately parallel, impregnated filaments, which fabric is wound about the core in one and the same direction. thickness at least equal to twice the mean diameter of a filament and with a pitch (p) less than 2 V ac, where a is the radius of that of the chord circumference in a cross-sectional plane equivalent circle and c is the mean of the chord perimeter length , and with a twist of the dew in the same direction as the wrap and equal to the dew rise p, and that the filaments preferably have a cross-sectional area of no more than 0.1 mm2.
25 Ved dugt betegnes et bundt filamenter, der er kontinuerlige og nogenlunde parallelle under den fornødne trækspænding til opvikling af dugten ved fremstillingen af vulstsnoren ifølge opfindelsen. Filamenterne i dugten kan allesammen bestå af det samme mate-30 riale, f.eks. glas eller aromatiske polyamider. I visse tilfælde kan dugten dog bestå af filamenter af mindst to forskellige materialer, f.eks. filamenter af glas og filamenter af aromatiske polyamider eller polyvinylalkohol og aromatiske polyamider eller polyvinylalkohol, glas og 35 aromatiske polyamider.25 In the case of cloth, a bundle of filaments which are continuous and approximately parallel to the required tensile stress for winding the fabric in the manufacture of the bead cord according to the invention is referred to. The filaments of the dew can all consist of the same material, e.g. glass or aromatic polyamides. However, in some cases, the dew can consist of filaments of at least two different materials, e.g. glass filaments and aromatic polyamide or polyvinyl alcohol filaments and aromatic polyamides or polyvinyl alcohol, glass and aromatic polyamides.
Ved uimprægneret filament skal forstås et filament, der ikke har et overtræk af et stof, der kunne 3By impregnated filament is meant a filament which does not have a coating of a substance which could 3
DK 15331 1 BDK 15331 1 B
binde filamentet med et andet filament i dugten. Filamenter, der er blevet olieret, da de fremstilledes, f.eks. for at undgå at de filtres sammen eller klæber til hinanden, vil dog betragtes som værende uimprægnere-5 de.tie the filament with another filament in the cloth. Filaments that have been oiled when made, e.g. however, to prevent them from filtering together or adhering to each other will be considered impregnated.
Korens tværsnitsform defineres ved skæring af koren med et plan, der indeholder vulstsnorens omdrejningsakse. Hvis koren f.eks. har kvadratisk tværsnits- form med kvadratsidelængde b, vil omkredslængden være 2 b 10 på 4b, og den ækvivalente cirkel har radius a = - .The cross-sectional shape of the choir is defined by cutting the choir with a plane containing the axis of rotation of the bead. For example, if the choir. has a square cross-sectional shape with square side length b, the circumferential length will be 2 b 10 on 4b, and the equivalent circle has radius a = -.
ππ
Middelværdien af korens omkredslængde defineres som den cirkel, der er stedet for tyngdepunkterne i de enkelte tværsnit gennem koren. Denne kore kan bestå af f.eks. stål eller af filamenter, der er indstøbt i et materials le med høj elasticitetsmodul, f.eks. epoxyharpiks eller polyester.The mean of the circumferential length of the choir is defined as the circle that is the center of gravity of the individual cross sections through the choir. This choir may consist of e.g. steel or of filaments embedded in a high elastic modulus material, e.g. epoxy resin or polyester.
Stigningen i en i henhold til opfindelsen snoet dugt er således relativt lille. Trækspændingen i filamenterne, der er uafhængige af hinanden, eftersom der 20 ingen imprægnering er, er nogenlunde den samme inden for en dugt. Derfor kommer filamentarrangementet i intim kontakt med koren. Filamenterne i et lag vil ordne sig ind mellem nabofilamenterne. Dette arrangement af filamenter har dog tilstrækkelig permeabilitet til, at der, 25 efter at man har fremstillet vulstsnoren ifølge opfindelsen, kan foretages imprægnering eller overfladebehandling med henblik på adhæsion til de omkring vulstsnoren beliggende materialer i dækvulsten. Denne permeabilitet er også tilstrækkelig til, at der kan dannes 30 bindinger mellem vulstsnorene ifølge opfindelsen og de støbematerialer med netdannende evne, man anvender til visse dæktyper, f.eks. dæk uden armeringslag.Thus, the increase in a cloth twisted in accordance with the invention is relatively small. The tensile stress in the filaments, which are independent of each other, since there is no impregnation, is roughly the same within a fabric. Therefore, the filament arrangement comes into intimate contact with the choir. The filaments in one layer will settle in between the neighboring filaments. However, this arrangement of filaments has sufficient permeability to impregnate or surface treatment after adhesion to the materials located in the tire bead, after the bead string of the invention has been manufactured. This permeability is also sufficient to allow 30 bonds to be formed between the bead cords of the invention and the molding materials with mesh forming ability used for certain types of cover, e.g. tires without reinforcement layers.
I forhold til de sædvanlige vulstsnore af tynde ståltråde med diameter fra 0,5 mm op til flere mm, giver 35 opfindelsen mulighed for at opnå meget lettere vulstsnore med samme brudstyrke. Dette beror på, at filamen- 4Compared to the usual beads of thin steel wire having a diameter of from 0.5 mm up to several mm, the invention allows much easier beads with the same breaking strength. This is because filament- 4
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terne giver en mere kompakt struktur med maksimal kontaktdannelse mellem filamenterne og med koren og i sig selv og i relation til den samme vægt har større sejhed end en ståltråd. Hvis man f.eks. anvender dugter af fi-5 lamenter af aromatiske polyamider, opnår man filamenter, der for den samme vægt har trækbruds tyrke fem gange så stor som for ståltråde.the terns provide a more compact structure with maximum contact between the filaments and with the core and in themselves and in relation to the same weight has greater toughness than a steel wire. For example, if When using fragrances of fi-5 aromatic polyamide filaments, filaments are obtained which have a tensile strength of five times the size of steel wire.
Brugen af filamenter med tværsnitsareal på højst 0,1 mm2 giver mulighed for dels at vikle dem med sno-10 ning i samme retning som omviklingen og lig med dugtstigningen p. Dermed forenkler man også fremstillingsudstyret, hvilket er umuligt med de industrielt anvendte ståltråde. Man kan også fremstille vulstsnore, hvor dugtstigningen varierer fra begyndelsen til afslutningen 15 af opviklingen til dannelse af laget, fortrinsvis således, at stigningen vokser, men forbliver dog altid mindre end 2 V a^c , hvor a^^ betegner radien i den cirkel, der er ækvivalent med omkredslængden af tværsnittet gennem den vulstsnor, der fremstilles, på det sted, hvor 20 dugten eller dugterne vikles op, hvilken omkredslængde kalkuleres som angivet i det foregående, og hvor c betegner middelværdien af korens omkredslængde, som defineret i det foregående.The use of filaments with a cross-sectional area of no more than 0.1 mm2 allows, in part, to wrap them with twist in the same direction as the wrap and equal to the pitch increase. This also simplifies the manufacturing equipment, which is impossible with the industrially used steel wires. It is also possible to produce bead cords where the pitch of the pitch varies from the beginning to the end of the winding to form the layer, preferably such that the pitch grows, but always remains less than 2 V a ^ c, where a ^^ represents the radius of the circle. which is equivalent to the circumferential length of the cross-section through the bead produced, at the place where the cloth (s) is wound, which circumferential length is calculated as given above, and where c represents the mean value of the circumferential length of the choir, as defined above.
En sådan udformning sikrer en mere ensartet for--25-deling af de kræfter, filamenterne udsættes for, efterhånden som de befinder sig længere borte fra koren.Such a design ensures a more uniform distribution of the forces to which the filaments are exposed as they are further away from the choir.
Selv om det er hensigtsmæssigt at lade stigningen vokse kontinuerligt, når man vikler dugten eller dugterne til tilvejebringelse af et lag, kan man også 30 lade stigningen være konstant, når man tilvejebringer et lag, f.eks. det lag, der befinder sig nærmest koren, hvorpå man lader stigningen variere og fortrinsvis vokse med en given værdi, når man tilvejebringer det næste lag.While it is convenient to allow the pitch to grow continuously as you wrap the cloth or cloths to provide a layer, the pitch may also be constant when providing a layer, e.g. the layer closest to the choir on which the pitch is varied and preferably grow by a given value when providing the next layer.
35 Opfindelsen omfatter også de varianter, hvor det på og omkring koren beliggende filamentarrangement be-The invention also encompasses the variants in which the filament arrangement located on and around the choir
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s står af mindst to lag, der indbyrdes afviger fra hinanden ved mindst én af følgende parametre: stigning, retning for opvikling om koren, arten af filamenterne i dugten, filamenternes middeldiameter. En inversion af 5 viklingsretningen for dugterne fra det ene lag til det næste mindsker risikoen for manglende planhed hos vulstsnorene, specielt, hvis man anvender en relativt fleksibel kore i stedet for en stiv kore.s are composed of at least two layers that differ from each other by at least one of the following parameters: pitch, direction of winding about the choir, the nature of the filaments in the scent, the mean diameter of the filaments. An inversion of the winding direction of the cloths from one layer to the next reduces the risk of non-flatness of the beads, especially if a relatively flexible core is used instead of a rigid core.
Opfindelsen forklares nærmere i det følgende un-10 der henvisning til den skematiske tegning, hvor fig. 1 viser, meget forstørret, et tværsnit gennem en vulstsnor omfattende en kore og et filamentlag opnået ved hjælp af en dugt, fig. 2 i mindre målestok end fig. 1 - en fila-15 mentdugt viklet om vulstsnorens kore som vist i fig. 1, fig. 3 et stykke vulstsnor, hvor koren er omgivet af tre lag, der hvert består af en dugt filamenter, og fig. 4 et snit gennem et dæk, i hvis vulster, der er indbygget en vulstsnor ifølge opfindelsen.The invention is explained in more detail below with reference to the schematic drawing, in which fig. 1 shows, in enlarged view, a cross-section through a bead cord comprising a core and a filament layer obtained by means of a cloth; FIG. 2 on a smaller scale than FIG. 1 - a filament cloth wound around the core of the bead as shown in FIG. 1, FIG. 3 shows a piece of beaded string in which the choir is surrounded by three layers, each consisting of a sheet of filaments; and FIG. 4 is a section through a tire in which beads incorporate a bead cord according to the invention.
20 Den i meget forstørret tværsnit i fig. 1 viste vulstsnor 1 består af en kore 2 af f.eks. stål, der har cirkulær tværsnitsform, og som efter overskæring i passende længde og sammensvejsning af enderne danner en cirkel, samt en dugt 3 (fig. 2) af i hovedsagen paral-25 leile filamenter 3" af aromatisk polyamid, der danner en slags strimmel, når dugten under trækspænding som antydet ved pilen F i fig. 2 vikles omkring koren til dannelse af filamentlaget 13.20 The greatly enlarged cross-section of FIG. 1 bead string 1 consists of a choir 2 of e.g. steel having a circular cross-sectional shape, which, after cutting the appropriate length and welding the ends, form a circle, as well as a cloth 3 (Fig. 2) of generally parallel filaments 3 "of aromatic polyamide forming a kind of strip , when the dew under tension, as indicated by arrow F in Figure 2, is wound around the choir to form the filament layer 13.
Koren 2 har en diameter på 2 mm (a = 1 mm) og 30 vulstsnoren 1 har en middelomkredslængde c på 1136 mm, svarende til en radius R på 181 mm.The core 2 has a diameter of 2 mm (a = 1 mm) and the bead cord 1 has a mean circumferential length c of 1136 mm, corresponding to a radius R of 181 mm.
Filamenterne 3' I dugten 3 har en middeldiameter på 17 μια og dugten 3 har garnnummer på 330 Tex.The filaments 3 'In the canvas 3 have a mean diameter of 17 μια and the canvas 3 has a yarn number of 330 Tex.
Dugten 3 skruevikles om koren 2 med stigning P på 35 ca. 45 mm. Dugten 3 er ikke imprægneret.The scent 3 is screwed around the choir 2 with pitch P of 35 approx. 45 mm. The scent 3 is not impregnated.
Inden for en vulstsnor, der i et tværsnitsplan har en diameter på 4,8 mm, kan der være op til 46 vindinger af den ikke-imprægnerede dugt.Within a bead cord having a diameter of 4.8 mm in a cross-sectional plane, there can be up to 46 turns of the non-impregnated fabric.
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66
Til sammenligning med en almindelig vulstsnor, der har de samme dimensioner, består udelukkende af en ståltråd og vejer 130 g, vejer en således udformet vulstsnor ifølge opfindelsen kun 46 g.In comparison with a common bead cord having the same dimensions consisting solely of a steel wire and weighing 130 g, a bead thus formed according to the invention weighs only 46 g.
5 En vulstsnor i overensstemmelse med opfindelsen, indbygget i vulsterne på et dæk af størrelse 175-14, er 1 stand til at tåle et dæktryk på op til 15 bar, medens referencesnoren kun kan tåle et dæktryk på op til 13,5 bar.A bead cord according to the invention, built into the beads on a tire of size 175-14, is capable of withstanding a tire pressure of up to 15 bar, while the reference cord can only withstand a tire pressure of up to 13.5 bar.
10 Når man med en dugt med imprægnerede filamenter fremstiller en vulstsnor, hvis dimensioner a og c er der samme som angivet foroven, vil et med sådanne vulst-snore udformet dæk ikke kunne tåle et tryk på mere end 9 bar.10 When a fabric with impregnated filaments is made with a bead cord whose dimensions a and c are the same as indicated above, a tire formed with such bead cords will not be able to withstand a pressure of more than 9 bar.
15 Fig. 2 viser en del af en vulstsnor 1 ifølge opfindelsen, set i samme retning som dækkets rotationsakse. I fig. 2 er tegnet omkredsretningen XX', den radiale retning ZZ1 , radien a for den cirkelcylindriske vulstsnor og radien R fra rotationsaksen til 20 vulstsnoren l1 s middelomkredslinie. Fig. 2 viser også stigningen P for en dugt 3, der er viklet om koren 2 i vulstsnoren 1.FIG. 2 shows part of a bead cord 1 according to the invention, seen in the same direction as the axis of rotation of the tire. In FIG. 2, the circumferential direction XX 'is drawn, the radial direction ZZ1, the radius a of the circular cylindrical bead line and the radius R of the axis of rotation to the bias line 11's mean circumferential line. FIG. 2 also shows the pitch P of a cloth 3 wrapped around the choir 2 in the bead 1.
Fig. 3 viser et stykke vulstsnor, der består af en stålkore 2 af samme art som beskrevet under hen-25 visning til fig. 1 og 2, og tre lag 21, 22 og 23, der hver for sig er tilvejebragt ved vikling af en dugt filamenter 3 af samme art som i fig. 1 og 2. Dugtviklingsretningen skifter fra det ene til det andet lag og stigningen vokser fra det inderste lag 21 til de 30 andre lag 22 og 23.FIG. 3 shows a piece of bead cord consisting of a steel core 2 of the same kind as described with reference to FIG. 1 and 2, and three layers 21, 22 and 23, each provided by winding a sheet of filaments 3 of the same kind as in FIG. 1 and 2. The dew-winding direction changes from one layer to the other and the pitch grows from the inner layer 21 to the other 30 layers 22 and 23.
Fig. 4 viser et tværsnit gennem et dæk 30, der har dæktop 31 og to dæksider 32. Hver dækside afsluttes af en vulst 33 til anbringelse på fælgen 34.FIG. 4 shows a cross section through a tire 30 having tire top 31 and two tire sides 32. Each tire side is terminated by a bead 33 for placement on the rim 34.
Hver dækvulst 33 har en vulstsnor ifølge opfindelsen 35 og dækkassearrangementet 37, der er forankret til vulstsnorene ved, at de er foldet op som vist ved 38.Each tire bead 33 has a bead cord according to the invention 35 and the tire assembly 37 which is anchored to the bead cords by being folded up as shown at 38.
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8114228 | 1981-07-20 | ||
| FR8114228A FR2509664A1 (en) | 1981-07-20 | 1981-07-20 | TIRE REINFORCEMENT ROD |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK326182A DK326182A (en) | 1983-01-21 |
| DK153311B true DK153311B (en) | 1988-07-04 |
| DK153311C DK153311C (en) | 1988-11-14 |
Family
ID=9260748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK326182A DK153311C (en) | 1981-07-20 | 1982-07-20 | TENSION CORD FOR PNEUMATIC COVER |
Country Status (27)
| Country | Link |
|---|---|
| US (1) | US4436132A (en) |
| JP (1) | JPS5823980A (en) |
| AR (1) | AR227251A1 (en) |
| AT (1) | AT386385B (en) |
| AU (1) | AU550493B2 (en) |
| BE (1) | BE893593A (en) |
| BR (1) | BR8204197A (en) |
| CA (1) | CA1174572A (en) |
| CH (1) | CH650195A5 (en) |
| DE (1) | DE3227138A1 (en) |
| DK (1) | DK153311C (en) |
| EG (1) | EG15576A (en) |
| ES (1) | ES273657Y (en) |
| FI (1) | FI76739C (en) |
| FR (1) | FR2509664A1 (en) |
| GB (1) | GB2102745B (en) |
| IL (1) | IL66349A0 (en) |
| IN (1) | IN156478B (en) |
| IT (1) | IT1155561B (en) |
| LU (1) | LU84271A1 (en) |
| MX (1) | MX154982A (en) |
| NL (1) | NL8202296A (en) |
| NO (1) | NO153289C (en) |
| NZ (1) | NZ201302A (en) |
| OA (1) | OA07155A (en) |
| SE (1) | SE451312B (en) |
| ZA (1) | ZA825169B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3615138A1 (en) * | 1986-05-03 | 1987-11-26 | Benteler Werke Ag | RUBBER TIRES FOR VEHICLES |
| US5049425A (en) * | 1989-01-04 | 1991-09-17 | Abany International Corporation | Porous yarn for OMS pintles |
| DE4137726C2 (en) * | 1990-11-16 | 1994-03-10 | Sumitomo Rubber Ind | Tire bead |
| US5871603A (en) * | 1996-08-12 | 1999-02-16 | Bridgestone Corporation | Pneumatic tires with organic or inorganic fiber cord bead core |
| EP0899132A1 (en) * | 1997-08-27 | 1999-03-03 | Bridgestone Corporation | Pneumatic tyres |
| FR2772666B1 (en) * | 1997-12-19 | 2000-01-21 | Michelin & Cie | TREAD SUPPORT MEMBRANE |
| JP2009255894A (en) * | 2007-10-26 | 2009-11-05 | Sumitomo Denko Steel Wire Kk | Annular concentrically twisted bead cord and vehicular tire using the same |
| US20130118670A1 (en) * | 2011-11-16 | 2013-05-16 | Robert Edward Lionetti | Pneumatic tire with tackified wrapped reinforcement |
| FR2991632B1 (en) * | 2012-06-07 | 2014-06-27 | Michelin & Cie | HYBRID ROD LIFT FOR PNEUMATIC. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2273200A (en) * | 1938-11-01 | 1942-02-17 | Du Pont | Artificial structure |
| FR2049508A5 (en) * | 1969-06-11 | 1971-03-26 | Michelin & Cie | |
| DE2146019A1 (en) * | 1971-09-15 | 1973-03-22 | Josef Leger | Metal ring of core clad with wound wires prodn - with interrupted drive to pack windings for tyre beads |
| DE2532605A1 (en) * | 1975-07-22 | 1977-01-27 | Alfred Dipl Ing Kristen | RING-SHAPED TIRE INSERT |
-
1981
- 1981-07-20 FR FR8114228A patent/FR2509664A1/en active Granted
-
1982
- 1982-06-03 NO NO821854A patent/NO153289C/en unknown
- 1982-06-04 US US06/384,915 patent/US4436132A/en not_active Expired - Fee Related
- 1982-06-07 NL NL8202296A patent/NL8202296A/en not_active Application Discontinuation
- 1982-06-22 BE BE0/208404A patent/BE893593A/en not_active IP Right Cessation
- 1982-07-15 LU LU84271A patent/LU84271A1/en unknown
- 1982-07-19 MX MX193646A patent/MX154982A/en unknown
- 1982-07-19 IT IT67923/82A patent/IT1155561B/en active
- 1982-07-19 EG EG82444A patent/EG15576A/en active
- 1982-07-19 GB GB08220832A patent/GB2102745B/en not_active Expired
- 1982-07-19 CH CH4393/82A patent/CH650195A5/en not_active IP Right Cessation
- 1982-07-19 ES ES1982273657U patent/ES273657Y/en not_active Expired
- 1982-07-19 IL IL66349A patent/IL66349A0/en not_active IP Right Cessation
- 1982-07-19 AU AU86174/82A patent/AU550493B2/en not_active Ceased
- 1982-07-19 NZ NZ201302A patent/NZ201302A/en unknown
- 1982-07-19 AT AT0279482A patent/AT386385B/en not_active IP Right Cessation
- 1982-07-19 JP JP57124543A patent/JPS5823980A/en active Granted
- 1982-07-20 SE SE8204404A patent/SE451312B/en not_active IP Right Cessation
- 1982-07-20 DE DE19823227138 patent/DE3227138A1/en active Granted
- 1982-07-20 CA CA000407671A patent/CA1174572A/en not_active Expired
- 1982-07-20 OA OA57747A patent/OA07155A/en unknown
- 1982-07-20 DK DK326182A patent/DK153311C/en not_active IP Right Cessation
- 1982-07-20 BR BR8204197A patent/BR8204197A/en not_active IP Right Cessation
- 1982-07-20 FI FI822564A patent/FI76739C/en not_active IP Right Cessation
- 1982-07-20 AR AR290027A patent/AR227251A1/en active
- 1982-07-20 ZA ZA825169A patent/ZA825169B/en unknown
- 1982-07-20 IN IN831/CAL/82A patent/IN156478B/en unknown
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |